The VideoLAN Forums

Posted: **18 Nov 2008 01:29**

Hi There,

I have an rtsp stream that I am trying to ultimately transcode and restream over rtp but I am having trouble trying to even get it to playback. The url is rtsp://82.140.146.206/mpeg4/1/media.amp The stream is from a AXIS 231D+ IP Camera

I can open the stream in QT but I cannot get it to work in vlc. Version is 0.9.6

Thanks,

Roger.

Posted: **18 Nov 2008 16:01**

VLC 0.9.6 doesn't open that. Neither does mplayer (connection timeout). Is the server on?

Posted: **19 Nov 2008 09:28**

I have an AXIS 214 PTZ and I can connect to its RTSP stream using VLC 0.9.6.

Posted: **19 Nov 2008 13:44**

The url is rtsp://82.140.146.206/mpeg4/1/media.amp

Sorry, a bit of duff information. The real url is rtsp://81.140.146.206/mpeg4/1/media.amp . I originally got the link verbally from the guy that operates the camera and this worked in quicktime. When he sent me an email with the link the ip was wrong which was the one I was trying in vlc

This one sort of works. In version 0.8.6i, I can play it back ok and restream it but it seems to loose connection to the camera when the camera pans.

In 0.9.6 I can play it back ok and it doesn't seem to loose connection but If I try to stream it then the player crashes straight away. I have tried the same command line for both versions and it appears that something may have changed between them.

This is the command line that works in 0.8.6i

Code: Select all

vlc -vvv rtsp://81.140.146.206/mpeg4/1/media.amp --sout "#transcode{venc=x264,vcodec=x264,vb=500,scale=1,acodec=mp4a,ab=32,channels=2,samplerate=22100}:rtp{dst=127.0.0.1,sdp=http://127.0.0.1:9000/myStream.sdp}"

There is no audio in the stream at the moment but I am planning on adding it from a seperate stream.
This will be to stream to a Wowza server which accepts h264 over a rtp stream.

Thanks for the help.

Roger.

Posted: **19 Nov 2008 15:09**

H.264 encoding is broken in current builds. I am trying to figure it out.
EDIT:
BTW, why you use samplerate 22100 and not 22050?

Posted: **19 Nov 2008 16:29**

Is there a build that will work with encoding h264 but is also late enough so as not to have the problem with the player loosing connection to the original stream. The stream is continous from a camera. It only seems to be affected if the camera pans quickly. The debug log reports eof.

Alternatetivly, is there some settings I can apply to the input side to either get it to automatically restart or wait a bit longer if it thinks the stream has finished.

Here is the output from 0.8.6i

Code: Select all

main debug: creating new input thread
main debug: waiting for thread completion
main debug: thread 4224 (input) created at priority 1 (input/input.c:265)
main debug: stream=`transcode'
main debug: looking for sout stream module: 1 candidate
main debug: stream=`rtp'
main debug: looking for sout stream module: 1 candidate
main debug: set sout option: sout-rtp-dst to 127.0.0.1
main debug: set sout option: sout-rtp-sdp to http://127.0.0.1:9000/myStream.sdp
main: creating httpd
main debug: net: listening to 127.0.0.1 port 9000
main debug: thread 4180 (httpd host thread) created at priority 0 (network/httpd.c:1078)
main debug: using sout stream module "stream_out_rtp"
main debug: set sout option: sout-transcode-venc to x264
main debug: set sout option: sout-transcode-vcodec to x264
main debug: set sout option: sout-transcode-vb to 500
main debug: set sout option: sout-transcode-scale to 1
main debug: set sout option: sout-transcode-acodec to mp4a
main debug: set sout option: sout-transcode-ab to 32
main debug: set sout option: sout-transcode-channels to 2
main debug: set sout option: sout-transcode-samplerate to 22100
stream_out_transcode debug: codec audio=mp4a 22100Hz 2 channels 32Kb/s
stream_out_transcode debug: codec video=x264 0x0 scaling: 1.000000 500kb/s
main debug: using sout stream module "stream_out_transcode"
main debug: `rtsp://81.140.146.206/mpeg4/media.amp' gives access `rtsp' demux `' path `81.140.146.206/mpeg4/media.amp'
main debug: creating demux: access='rtsp' demux='' path='81.140.146.206/mpeg4/media.amp'
main debug: looking for access_demux module: 1 candidate
live555 debug: RTP subsession 'video/MP4V-ES'
main debug: selecting program id=0
main debug: using access_demux module "live555"
main debug: looking for a subtitle file in C:\Program Files\VideoLAN\VLC\
main debug: looking for packetizer module: 17 candidates
packetizer_mpeg4video debug: opening with vol size: 31
main debug: using packetizer module "packetizer_mpeg4video"
main debug: stream out mode -> no decoder thread
main debug: starting in sync mode
main debug: `rtsp://81.140.146.206/mpeg4/media.amp' successfully opened
main debug: adding a new input
stream_out_transcode debug: creating video transcoding from fcc=`mp4v' to fcc=`x264'
main debug: looking for decoder module: 28 candidates
ffmpeg debug: libavcodec already initialized
ffmpeg debug: postprocessing disabled
ffmpeg debug: using direct rendering
ffmpeg debug: ffmpeg codec (MPEG-4 Video) started
main debug: using decoder module "ffmpeg"
main debug: looking for encoder module: 1 candidate
main debug: using encoder module "x264"
main debug: removing module "x264"
stream_out_transcode debug: late picture skipped (561603773000)
stream_out_transcode debug: decoder aspect is 576000:432000
stream_out_transcode debug: source pixel aspect is 1.090909:1
stream_out_transcode debug: scaled pixel aspect is 1.090909:1
stream_out_transcode debug: source 352x288, crop 352x288, destination 352x288, padding 352x288
stream_out_transcode debug: encoder aspect is 576000:432000
main debug: looking for encoder module: 1 candidate
main debug: using encoder module "x264"
main debug: looking for sout access module: 1 candidate
main debug: set sout option: sout-udp-raw to (null)
main debug: net: connecting to 127.0.0.1 port 1232
main debug: thread 4412 (sout write thread) created at priority 15 (udp.c:268)
access_output_udp debug: udp access output opened(127.0.0.1:1232)
main debug: using sout access module "access_output_udp"
stream_out_rtp debug: access out udp{raw}:127.0.0.1:1232
stream_out_rtp debug: we found a startcode for NAL with TYPE:6
stream_out_rtp debug: we found a startcode for NAL with TYPE:7
stream_out_rtp debug: we found a startcode for NAL with TYPE:8
stream_out_rtp debug: maximum RTP packet size: 1450 bytes
stream_out_rtp debug: sdp=v=0
o=- 561603359000 1 IN IP4 127.0.0.1
s=NONE
t=0 0
a=tool:vlc 0.8.6h
c=IN IP4 127.0.0.1
m=video 1232 RTP/AVP 96
b=AS:500
a=rtpmap:96 H264/90000
a=fmtp:96 packetization-mode=1;profile-level-id=4d4033;sprop-parameter-sets=Z01AM5p0CwS2BCAAAAMAIAAABlHjBlQ=,aO48gA==;

live555 debug: tk->rtpSource->hasBeenSynchronizedUsingRTCP()
stream_out_transcode debug: late picture skipped (447816533100)
stream_out_transcode debug: late picture skipped (447816493100)
live555 debug: StreamClose
main debug: EOF reached
main debug: closing input
main debug: removing module "live555"
main debug: removing module "packetizer_mpeg4video"
main debug: killing decoder fourcc `mp4v', 0 PES in FIFO
main debug: removing an input
ffmpeg debug: ffmpeg codec (MPEG-4 Video) stopped
main debug: removing module "ffmpeg"
main debug: removing module "x264"
main debug: thread times: real 0m59.968750s, kernel 0m0.000000s, user 0m0.000000s
main debug: thread 4412 joined (udp.c:316)
access_output_udp debug: udp access output closed
main debug: removing module "access_output_udp"
main debug: destroying sout
main debug: destroying chain... (name=transcode)
main debug: destroying chain... (name=rtp)
main debug: thread times: real 1m0.812500s, kernel 0m0.000000s, user 0m0.000000s
main debug: thread 4180 joined (network/httpd.c:1134)
main debug: HTTP host removed
main debug: no host left, stopping httpd
main debug: removing module "stream_out_rtp"
main debug: destroying chain done
main debug: removing module "stream_out_transcode"
main debug: destroying chain done
main debug: thread times: real 1m0.828125s, kernel 0m0.078125s, user 0m20.046875s
main debug: thread 4224 joined (input/input.c:412)
main: nothing to play

btw the original stream is available at rtsp://81.140.146.206/mpeg4/1/media.amp and rtsp://81.140.146.206/mpeg4/media.amp

Posted: **20 Nov 2008 19:41**

According to trax the issue is same as in http://trac.videolan.org/vlc/ticket/1756
jb is doing another x264 contrib and I check it again after that.

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